ECE :: Microwave Communication
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In 8 cavity magnetron the p mode corresponds to a total phase shift equal to
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Satellite communication systems use the frequency band
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The Q factor of a waveguide resonator is given by (ω0 is resonant frequency, U is energy storage and WL is the power loss)
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A TR (transmitter receiver) tube has
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When duct propagation exists
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If μr is relative permeability, ∈r is relative permittivity, c is velocity of light fc is cutoff frequency, phase velocity vp (i.e., speed with which a particular phase of the wave travels down a rectangular waveguide at frequency f) is given by
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In a microwave coaxial cable the inner conductor radius is a and inner radius of outside conductor is b. For TE11 mode the cut off wavelength is about
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A.
the line of sight and diffraction. Zone concepts are payable
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B.
the line of sight and diffraction zone concepts are not applicable
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C.
line of sight concept is applicable but diffraction zone concept is applicable
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D.
diffraction zone concept is not applicable but line of sight concept is not applicable
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the characteristic impedance becomes real.